Per
Area is one such word.
Words that start with R and end with Y are:racyrainyrallyraspberryraspyratifyrayreadilyreadyreallyrecoveryrectoryregencyregistryrelayrelyriskyrosaryrosyrowdyroyaltyrubyruddyrudelyrunwayrusty
Brother.
roadster
rhombus
Salamander.
Five letter words that start and end with R:radarrazorrecurreferricerriderrigorriverrotorroverrulerrumor
Six letter words that start and end with R:rafterraiderrancorrangerrapierraptorrasherratherreaderreaperrectorreeferrenderrenterrepairricherrigourringerripperrobberrockerrollerromperrooferrosterrubberrudderrunner
The only word that starts with R and ends with J is 'RAJ'.
Clover, clever, closer and closer is a 6 letter word. They begin with CL and end with R.
ruing